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netlabel: Add support for creating a CALIPSO protocol domain mapping.

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This extends the NLBL_MGMT_C_ADD and NLBL_MGMT_C_ADDDEF commands
to accept CALIPSO protocol DOIs.

Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Huw Davies
2016-06-27 15:02:49 -04:00
committed by Paul Moore
parent e1ce69df7e
commit dc7de73f19
4 changed files with 89 additions and 5 deletions
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47
net/netlabel/netlabel_mgmt.c
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@@ -41,8 +41,10 @@
#include <net/ipv6.h>
#include <net/netlabel.h>
#include <net/cipso_ipv4.h>
#include <net/calipso.h>
#include <linux/atomic.h>
#include "netlabel_calipso.h"
#include "netlabel_domainhash.h"
#include "netlabel_user.h"
#include "netlabel_mgmt.h"
@@ -73,6 +75,7 @@ static const struct nla_policy netlbl_mgmt_genl_policy[NLBL_MGMT_A_MAX + 1] = {
[NLBL_MGMT_A_VERSION] = { .type = NLA_U32 },
[NLBL_MGMT_A_CV4DOI] = { .type = NLA_U32 },
[NLBL_MGMT_A_FAMILY] = { .type = NLA_U16 },
[NLBL_MGMT_A_CLPDOI] = { .type = NLA_U32 },
};
/*
@@ -96,6 +99,9 @@ static int netlbl_mgmt_add_common(struct genl_info *info,
int ret_val = -EINVAL;
struct netlbl_domaddr_map *addrmap = NULL;
struct cipso_v4_doi *cipsov4 = NULL;
#if IS_ENABLED(CONFIG_IPV6)
struct calipso_doi *calipso = NULL;
#endif
u32 tmp_val;
struct netlbl_dom_map *entry = kzalloc(sizeof(*entry), GFP_KERNEL);
@@ -137,6 +143,19 @@ static int netlbl_mgmt_add_common(struct genl_info *info,
entry->family = AF_INET;
entry->def.cipso = cipsov4;
break;
#if IS_ENABLED(CONFIG_IPV6)
case NETLBL_NLTYPE_CALIPSO:
if (!info->attrs[NLBL_MGMT_A_CLPDOI])
goto add_free_domain;
tmp_val = nla_get_u32(info->attrs[NLBL_MGMT_A_CLPDOI]);
calipso = calipso_doi_getdef(tmp_val);
if (calipso == NULL)
goto add_free_domain;
entry->family = AF_INET6;
entry->def.calipso = calipso;
break;
#endif /* IPv6 */
default:
goto add_free_domain;
}
@@ -232,6 +251,8 @@ static int netlbl_mgmt_add_common(struct genl_info *info,
map->list.mask = *mask;
map->list.valid = 1;
map->def.type = entry->def.type;
if (calipso)
map->def.calipso = calipso;
ret_val = netlbl_af6list_add(&map->list, &addrmap->list6);
if (ret_val != 0) {
@@ -255,6 +276,9 @@ add_free_addrmap:
kfree(addrmap);
add_doi_put_def:
cipso_v4_doi_putdef(cipsov4);
#if IS_ENABLED(CONFIG_IPV6)
calipso_doi_putdef(calipso);
#endif
add_free_domain:
kfree(entry->domain);
add_free_entry:
@@ -357,6 +381,15 @@ static int netlbl_mgmt_listentry(struct sk_buff *skb,
if (ret_val != 0)
return ret_val;
switch (map6->def.type) {
case NETLBL_NLTYPE_CALIPSO:
ret_val = nla_put_u32(skb, NLBL_MGMT_A_CLPDOI,
map6->def.calipso->doi);
if (ret_val != 0)
return ret_val;
break;
}
nla_nest_end(skb, nla_b);
}
#endif /* IPv6 */
@@ -364,15 +397,25 @@ static int netlbl_mgmt_listentry(struct sk_buff *skb,
nla_nest_end(skb, nla_a);
break;
case NETLBL_NLTYPE_UNLABELED:
ret_val = nla_put_u32(skb,NLBL_MGMT_A_PROTOCOL,entry->def.type);
ret_val = nla_put_u32(skb, NLBL_MGMT_A_PROTOCOL,
entry->def.type);
break;
case NETLBL_NLTYPE_CIPSOV4:
ret_val = nla_put_u32(skb,NLBL_MGMT_A_PROTOCOL,entry->def.type);
ret_val = nla_put_u32(skb, NLBL_MGMT_A_PROTOCOL,
entry->def.type);
if (ret_val != 0)
return ret_val;
ret_val = nla_put_u32(skb, NLBL_MGMT_A_CV4DOI,
entry->def.cipso->doi);
break;
case NETLBL_NLTYPE_CALIPSO:
ret_val = nla_put_u32(skb, NLBL_MGMT_A_PROTOCOL,
entry->def.type);
if (ret_val != 0)
return ret_val;
ret_val = nla_put_u32(skb, NLBL_MGMT_A_CLPDOI,
entry->def.calipso->doi);
break;
}
return ret_val;